Understanding Synthetic Diamonds
The science that recreates the natural formation of diamonds.
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A New Approach to Diamond
Diamonds have always been one of the most fascinating stones in jewelry. Their exceptional hardness, purity, and unique ability to capture light make them a timeless symbol.
Traditionally, diamonds are formed in the Earth's mantle at depths exceeding 150 kilometers, under extreme conditions of pressure and temperature. This natural process spans billions of years.
Scientific advancements now make it possible to replicate these conditions in a controlled environment. Thanks to these technologies, it is now possible to create diamonds with the same crystal structure, chemical composition, and optical properties as natural diamonds.
The only difference lies in their origin.
Synthetic diamonds thus represent a major technological evolution, opening new perspectives in the world of contemporary jewelry.
Excellence lies not only in appearance, but in the precision with which light is understood.
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How is a synthetic diamond created?
Lab-grown diamonds are produced using advanced technologies that replicate the conditions necessary for natural diamond formation.
Two main methods are used today: HPHT technology and CVD technology.
The HPHT (High Pressure High Temperature) method recreates the conditions present in the Earth's mantle. Under extremely high pressure and at temperatures exceeding 1500°C, carbon atoms gradually organize to form a diamond crystal.
The CVD (Chemical Vapor Deposition) method, on the other hand, uses a carbon-rich gas placed in a vacuum chamber. Under the effect of an energetic plasma, carbon atoms are deposited layer by layer on a diamond seed, allowing the gradual growth of the crystal.
In both cases, the result is an authentic diamond with the same physical, chemical, and optical characteristics as diamonds extracted from the Earth.
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Natural diamond, laboratory-grown diamond and simulants
It is important to distinguish three categories of stones that are often confused: natural diamonds, synthetic diamonds, and simulants. While their appearance may sometimes seem similar, their properties are very different.
| Criterion |
Laboratory-grown diamond
Science
|
Natural diamond
Origin
|
Simulants
Imitation
|
|---|---|---|---|
|
Essential
Crystal structure
|
diamond-like |
identical to natural diamond |
different |
|
Essential
Composition
|
pure carbon |
pure carbon |
miscellaneous materials |
|
Essential
Hardness
|
10 on the Mohs scale |
10 on the Mohs scale |
inferior to diamond |
|
Essential
Gloss
|
exceptional |
outstanding |
variable |
|
Essential
Certification
|
yes |
yes |
generally not |
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The quality of a Diamond
Not all diamonds are created equal. To understand their value and beauty, experts use specific criteria known as the 4Cs: Cut, Color, Clarity, and Carat.